AN ESTIMATION OF HEAT STRESS IN TROPICS

作者：R BHATTACHARYA; S PAL; G BISWAS; S KARMAKAR

来源：International Journal of Engineering Science and Technology, 2012.

• Thermohygrometric index
• Wet bulb globe temperature
• Relative strain index
• Correlation.

Impact of global warming is a growing concern and there is a need of regional based study to quantify the degree of stress due to thermal environment. The present study identifies the distribution of stressful days of summer months (March, April and May) for the years 1995 to 2012 over Dum Dum (22～34＊N/88～22＊E) in the district of North 24 Parganas, West Bengal which falls under suburban climate. Thermohygrometric index THI is estimated from the daily weather data. It has been observed that 72.99% days of summer months have discomfort scores ranging from 3 to 5. Number of stress events are high in the month May (59.37%). Estimated values of WBGT (Wet bulb globe temperature) and RSI (Relative strain index) have showed that both the indices are significantly correlated with THI having R2 values 0.95 and 0.91 respectively. Recognizing the discomfort scores of THI, regional based scales of WBGT and RSI are proposed.

• 出版日期2012